Solution for springs.

I've got a '96 with squeeky leaf springs. It was suggested that I remove and sand each spring to remove any rust and dirt . Then apply two coats of "Slip Plate" graphite paint. Anyone with experience with this product or any other simular graphite paint? I'm looking for a solution and not a temporary fix. I may be too late on this but what is this "TSB" pertaining to leaf spring replacement? Any and all suggestions are needed. Thanks.